Rio Negro Weather in October
Average highs run from 24°C on October 1 to 26°C on October 31, and lows from 12°C to 14°C. Normal precipitation for the month is 171 mm over about 16 wet days.
October day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
October at a glance
- Average high
- 25°C
- Average low
- 14°C
- Precipitation
- 171 mm
- Reanalysis high
- 34°COct 13, 2019
- Reanalysis low
- 6°COct 7, 2004
- Daylight
- 12 h 20 min to 13 h 04 min
- Cloud cover
- 76%
- Humidity
- 80%
- Dew point
- 15°C
- Wind
- 4.7 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Oct 1 | 24°C | 12°C | 32°C 2020 | 7°C 1991 | 54% |
| Oct 2 | 24°C | 12°C | 34°C 2020 | 8°C 1991 | 54% |
| Oct 3 | 24°C | 13°C | 29°C 2003 | 7°C 1999 | 54% |
| Oct 4 | 24°C | 13°C | 30°C 2003 | 6°C 1999 | 54% |
| Oct 5 | 24°C | 13°C | 32°C 2019 | 8°C 1999 | 55% |
| Oct 6 | 24°C | 13°C | 32°C 2020 | 6°C 2000 | 54% |
| Oct 7 | 25°C | 13°C | 32°C 2012 | 6°C 2004 | 54% |
| Oct 8 | 25°C | 13°C | 30°C 2012 | 7°C 2004 | 54% |
| Oct 9 | 25°C | 13°C | 31°C 2012 | 9°C 1999 | 54% |
| Oct 10 | 25°C | 13°C | 32°C 2007 | 7°C 1995 | 54% |
| Oct 11 | 25°C | 14°C | 32°C 2014 | 6°C 1995 | 55% |
| Oct 12 | 25°C | 14°C | 33°C 2019 | 8°C 2010 | 56% |
| Oct 13 | 25°C | 14°C | 34°C 2019 | 9°C 2010 | 56% |
| Oct 14 | 25°C | 14°C | 32°C 2014 | 7°C 1995 | 56% |
| Oct 15 | 25°C | 14°C | 31°C 2014 | 9°C 1995 | 55% |
| Oct 16 | 25°C | 14°C | 33°C 2014 | 10°C 2003 | 54% |
| Oct 17 | 25°C | 14°C | 32°C 2014 | 9°C 2003 | 55% |
| Oct 18 | 25°C | 14°C | 31°C 2017 | 10°C 2012 | 56% |
| Oct 19 | 25°C | 14°C | 31°C 2017 | 10°C 1995 | 57% |
| Oct 20 | 25°C | 14°C | 30°C 2020 | 10°C 1998 | 57% |
| Oct 21 | 25°C | 14°C | 30°C 2020 | 10°C 1995 | 56% |
| Oct 22 | 25°C | 14°C | 29°C 2012 | 9°C 1995 | 55% |
| Oct 23 | 25°C | 14°C | 30°C 2000 | 7°C 2001 | 54% |
| Oct 24 | 25°C | 14°C | 30°C 2003 | 9°C 2001 | 53% |
| Oct 25 | 25°C | 14°C | 31°C 2003 | 11°C 1998 | 52% |
| Oct 26 | 25°C | 14°C | 31°C 2006 | 12°C 1999 | 50% |
| Oct 27 | 25°C | 14°C | 31°C 2019 | 11°C 2010 | 50% |
| Oct 28 | 26°C | 14°C | 31°C 2006 | 7°C 2016 | 51% |
| Oct 29 | 26°C | 14°C | 32°C 2006 | 8°C 1995 | 50% |
| Oct 30 | 26°C | 14°C | 34°C 2019 | 9°C 1995 | 50% |
| Oct 31 | 26°C | 14°C | 32°C 2019 | 10°C 1995 | 51% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- October 1
- sunrise 5:59 AM, sunset 6:19 PM
- October 31
- sunrise 5:31 AM, sunset 6:35 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.